Emergencies Flashcards
(46 cards)
What signs may suggest an airway is partially obstructed and how is each managed?
- Harsh stridor- dexamethasone, ?adrenaline neb and secure airway (croup, epiglottis, anaphylaxis)
- soft stridor, drooling: intubate and IV abx
- wheeze: salbutamol nebs
- grunting: CPAP
- sudden stridor and cough: manage as foreign body
- sudden stridor + allergen: IM adrenaline
- gurgling: suction/ recovery position
How should breathing be assesed in A-E
- Effort: RR, posturing, recessions, acessory muscle use, nasal flaring
- Effectiveness; chest expansion, air entry, pulse oximetry
- Effects of inadequacy: HR, skin colour, mental sate
What are high resp rates for children of different ages?
Neonate: RR >60
Infant: RR: >50
Young child >40
Older child >30
How do you calculate volume needed for a fluid bolus in a pt thats in shock?
10-20mls/ kg of 0.9%normal saline.
If >40mls/kg is given then call ICU for inotropic support
What is stiff posturing and what does it suggest
- decorticate= arm flexed
- decerebrate= arms extended
- suggests serious brain dysfunction
what dose of IV dextrose is given to treat child with a hypo
up to 500mg/kg 10% dextrose
Define a brief resolved unexplained event
An episode, frightening to the observer, involving a combination of apnoea, choking or gagging, colour change, altered responsiveness and change in tone in a child <1 year
What could cause a brief resolved unexplained event?
- GORD is most common
- seizures
- CNS infection
- URTI/ resp infection
- breath holding
- sleep apnoea
- arrrhythmias
- congenital cardiac disease
- electrolyte errors
- meningitis / sepsis
- suffocation
- shaken baby syndrome
- factitious induced illness
- ingestion of toxins/ drugs
How should brief resolved unexplained events be investigated
- Low risk pts require only an ECG and prenasal swabs for pertussis as it could be whooping cough. Low risk pts are: age >2months, >32 gestation, no previous BRUE, event lasting <1min, no CPR by healthcare professional, no concerning features in hx or examination
- High risk pts would also get a CXR, blood gas, lab bloods (FBC, U&E, blood film, crp, bone profile and glucose)
How should higher risk BRUE pts be managed?
Admit for overnight sats and vital signs monitoring as a minimum. If stable overnight they can generally be discharged home with advice and BLS training. If there is particular concern they may get consultant outpt follow up
How should anaphylaxis be managed?
- Sit up if airway/ breathing problems
- lie flat and raise legs if circulatory problems
- give adrenaline IM
- establish airway, give high flow O2, give fluid challenge
- give chlorphenamine and hydrocortisone
- monitor sats, ECG and BP
- do mast cell tryptase as 1hr and 24hrs
- observe for 6 hrs due to risk of biphasic reaction, give antihistamines for 3 days and an autoinjector
- f/u allergy clinic
What dose of adrenaline should be given to children of different ages in anaphylaxis
All 1:1000, given IM
Adult and child >12: 500 micrograms (0.5ml)
6-12 yrs: 300micrograms (0.3ml)
<6yrs: 150micrograms (0.15ml)
What doses of chlorphenamine should be given to children of different ages in anaphylaxis
IM or slow IV Adult or >12: 10mg 6-12: 5mg 6 months- 6yrs: 1.5mg <6months: 150micrograms/ kg
What doses of hydrocortisone should be given to children of different ages in anaphylaxis
IM or slow IV adult or >12: 200mg 6-12: 100mg 6months- 6yrs: 50mg <6months: 25mg
Describe the clinical features of encephalitis
- Fever, headache, altered mental status
- Altered behaviour
- Altered cognition
- Reduced consciousness
- New onset seizures
- New focal neurological signs
Give 4 differentials for encephalitis
- meningitis
- intracranial haemorrhage
- hypo/ hyperglycaemia
- uraemia
- hyperammonia
- wernikes encephalopathy (alcohol abuse)
- concussion
- intoxication
- SLE
How do meningitis and encephalitis differ
- rarely get photophobia and neck stiffness in encephalitis
- seizures more common in encephalitis
- always get focal neurological signs in encephalitis, this is less common and occurs later in meningitis
What can cause encephalitis?
- viral: herpes simplex virus is most common, cmv, adenovirus, influenza, polio, rabies
- bacterial: tb, mycoplasma, listeria
- fungal: cyrptococcus, taxoplasmosis
- autoimmune: vasculitis, SLE
- renal or hepatic encephalopathy
- tumours, paraneoplastic limbic encephalitis
How should suspected encephalitis be investigated?
- LP
- CT head if LP contraindicated, then do LP if no brain shift
- MRI after LP
- CSF tested for: opening pressure, differential WCC, RCC, microscopu, culture and sensitivities, protein, lactate, glucose (compare to plasma glucose), virology, PCR for HSV1&2, VZV and enterovirus, TB culutres and antibody testing
- rectal swabs for enterovirus
- sputum samples if resp infection
- HIV test
- blood cultures and film and routine
What is the difference between bacterial and viral encephalitis/ meningitis on LP?
Bacterial: generally higher opening pressures, neutrophil predominant, very high WCC (>1000, normal is <5), high protein levels, decreased CSF glucose
Viral: only midly high opening pressures, high WCC (<1000)- mainly lymphocytes, CSF glucose is normal
How is encephalitis managed?
- urgent admission
- IV abx and sepsis 6 as ?meningitis
- aciclovir infusion started if CSF and / or imaging findings suggest viral encephalitis
- no role for steroids
- anticonvulsants and sedatives for agitation
- ICU and ventilation may be needed to reduce brain swelling
Where can information be found on antidotes to specific poisions
toxbase or phone NPIS for advice if severe or complex
What poisons require serum monitoring to guide management?
carbocyhaemoglobin, digoxin, ethanol, Ethylene, iron, lithium, methanol, paracetamol, salicylate (aspirin), theophylline, valproate
When can activated charcoal be used?
to prevent absorption if they present within an hour of ingestion AND there is a potentially toxic amount of drug that absorbs to charcoal has been taken, in the absence of contraindications